Julabo FK30-SL User manual
2
Congratulations!
You have made an excellent choice.
JULABO thanks you for the trust you have placed in us.
This operating manual has been designed to help you gain an understanding of the operation and
possible applications of our circulators. For optimal utilization of all functions, we recommend that you
thoroughly study this manual prior to beginning operation.
The JULABO Quality Management System
Temperature control devices for research and industry are developed,
produced, and distributed according to the requirements of ISO 9001 and
ISO 14001. Certificate Registration No. 01 100044846
Unpacking and inspecting
Unpack the circulator and accessories and inspect them for possible transport damage. Damage should
be reported to the responsible carrier, railway, or postal authority, and a damage report should be
requested. These instructions must be followed fully for us to guarantee our full support of your claim
for protecting against loss from concealed damage. The form required for filing such a claim will be
provided by the carrier.
Printed in Germany Changes without prior notification reserved
Important: keep operation manual for future use
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TABLE OF CONTENTS
Operating manual................................................................................................................ 5
1. Intended use................................................................................................................. 5
1.1. Description ............................................................................................................... 5
2. Operator responsibility – Safety recommendations....................................................... 6
2.1. Disposal ................................................................................................................... 8
2.2. Warranty conditions ................................................................................................. 8
2.3. EC Conformity.......................................................................................................... 9
2.4. Technical specifications ......................................................................................... 12
Operating instructions ....................................................................................................... 15
3. Safety notes for the user............................................................................................. 15
3.1. Explanation of safety notes .................................................................................... 15
3.2. Explanation of other notes...................................................................................... 15
3.3. Safety recommendations........................................................................................ 16
4. Operating controls and functional elements ................................................................ 18
5. Preparations ............................................................................................................... 22
5.1. Installation.............................................................................................................. 22
5.2. Bath fluids .............................................................................................................. 23
5.3. Filling / draining...................................................................................................... 24
6. Operating procedures ................................................................................................. 25
6.1. Power connection................................................................................................... 25
6.2. Switching on / Selecting the language.................................................................... 25
6.2.1.Switching on the cooling machine...................................................................... 26
6.3. Start - Stop............................................................................................................. 26
6.4. Adjusting the temperature chamber........................................................................ 26
7. Setting of temperatures ................................................................................. 27
8. Safety installations, warning functions........................................................... 27
8.0.1.Early warning system, low level protection......................................................... 31
9. Menu functions.............................................................................................. 32
9.1. Start of a program .................................................................................................. 34
9.1.1.Status at the end of a program .......................................................................... 36
9.1.2.Indication after successful start.......................................................................... 36
9.1.3.Editing after Start............................................................................................... 37
9.1.4.Interrupting a program ....................................................................................... 37
9.1.5.Interruption after a power failure ........................................................................ 38
9.1.6.Termination of a program................................................................................... 38
9.2. Program administration, creation............................................................................ 39
9.3. Setting the pump pressure ..................................................................................... 43
9.4. Configuration.......................................................................................................... 44
9.4.1.Remote control via the serial interface............................................................... 47
9.4.2.Keypad control or setpoint setting via the analog input ...................................... 47
9.4.3.Autostart ............................................................................................................ 48
9.4.4.Off-Mode ........................................................................................................... 48
4
9.4.5.ActVar - actuating variable..................................................................................49
9.4.6.Setting of clock and date ....................................................................................50
9.4.7.Language ...........................................................................................................50
9.4.8.Unit.....................................................................................................................50
9.4.9.Program type......................................................................................................50
9.4.10. Reset.............................................................................................................50
9.4.11. C-Sensor - Precision reference sensor ..........................................................51
9.5. Control ....................................................................................................................52
9.5.1. Control internal / external...................................................................................54
9.5.2.Selftuning ...........................................................................................................55
9.5.3.Dynamik intern ...................................................................................................55
9.5.4.CoSpeed - extern ...............................................................................................56
9.5.5.Control parameters – internal/external................................................................56
9.6. Serial Interface........................................................................................................58
9.7. ATC Absolute Temperature Calibration, 3-point calibration.....................................59
9.7.1.ATC Fühler - intern / extern ................................................................................62
9.7.2.ATC Status - yes / no .........................................................................................62
9.7.3.Type 1 -/ 2 -/ 3 point ..........................................................................................62
9.7.4.Example: 3-point calibration for internal control .................................................63
9.8. Limits ......................................................................................................................65
9.8.1.Limits for internal control and external control.....................................................66
9.8.2.Limits for external control....................................................................................67
9.9. Analog inputs/outputs .............................................................................................68
9.9.1.Outputs of the connector - REG+E-PROG..........................................................72
9.9.2.Input of the connector - REG+E-PROG ..............................................................73
9.9.3.External Stand-by input ......................................................................................75
9.9.4.Alarm-output.......................................................................................................76
10. Troubleshooting guide / Error messages .....................................................................77
11. Electrical connections..................................................................................................80
12. Remote control ............................................................................................................83
12.1. Setup for remote control..........................................................................................83
12.2. Communication with a PC or a superordinated data system ...................................83
12.3. List of commands....................................................................................................84
12.4. Status messages ....................................................................................................88
12.5. Error messages.......................................................................................................88
13. Installation of electronic module with analog connectors .............................................89
14. JULABO Service – Online remote diagnosis ...............................................................90
15. Cleaning / repairing the unit.........................................................................................91
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Operating manual
1. Intended use
JULABO circulators have been designed to control the temperature of specific fluids in a bath tank.
JULABO circulators are not suitable for direct temperature control of foods, semi-
luxury foods and tobacco, or pharmaceutical and medical products.
Direct temperature control means unprotected contact of the object with the bath
medium (bath fluid).
1.1. Description
ICC
TCF
ATC3
RS232
RS485
Pt100
PUMP
SMART
The circulators are operated via the splash-proof keypad. The implemented
microprocessor technology allows to set and to store different values that can be
indicated on the VFD COMFORT-DISPLAY and LCD DIALOG-DISPLAY. Three
menu keys facilitate adjusting setpoints, warning and safety functions and menu
functions.
The integrated programmer allows storing and running temperature and time-
dependent processes.
The control electronics including “ICC - Intelligent Cascade Control“ automatically
adapts the heat supplied to the thermal requirements of the bath.
The TCF -Temperature Control Features allow the user to have access to all
important temperature control parameters. This means: Full control on the control
mode and the chance to manually adjust or adapt control to the specific application.
Absolute Temperature Calibration (ATC3) provides high temperature stability in the
bath. With the 3-point calibration an offset is adjusted at three temperatures to
ensure an accurate temperature pattern at the selected spot in the bath over the full
temperature range.
Electrical connections:
The serial interface, switchable from RS232 to RS485, allows modern process
technology without additional interface.
Connection for Pt100 external sensor for external temperature measurement and
control.
Alarm output for external alarm message or control of JULABO refrigerating baths
or solenoid valve (cooling water).
The electronic module (option) provides 3 further analog connections (alarm input,
standby input, recorder output, programmer input).
The excess temperature protection conforming to IEC 61010-2-010 is a safety
installation independent from the control circuit. This protection can be indicated
and set on the LCD DIALOG-DISPLAY.
The early warning system for low level signals that bath fluid needs to be refilled
before the low level protection conforming to IEC 61010-2-010 causes a complete
shut-down of the main functional elements.
Intelligent pump system: The pump capacity (electronically adjustable via the motor
speed) enables to adapt to varying conditions for internal and external temperature
applications.
Operator responsibility – Safety recommendations
6
2. Operator responsibility – Safety recommendations
The products of JULABO ensure safe operation when installed, operated, and maintained according to
common safety regulations. This section explains the potential dangers that may arise when operating
the circulator and also specifies the most important safety precautions to preclude these dangers as far
as possible.
The operator is responsible for the qualification of the personnel operating the units.
The personnel operating the units should be regularly instructed about the dangers involved with
their job activities as well as measures to avert these dangers.
Make sure all persons tasked with operating, installing, and maintaining the unit have read and
understand the safety information and operating instructions.
When using hazardous materials or materials that could become hazardous, the circulator may be
operated only by persons who are absolutely familiar with these materials and the circulator. These
persons must be fully aware of possible risks.
If you have any questions concerning the operation of your unit or the information in this manual, please
contact us!
Contact JULABO GmbH
Gerhard-Juchheim-Strasse 1
77960 Seelbach / Germany
Tel. +49 (0) 7823 / 51-0
Fax +49 (0) 7823 / 24 91
www.julabo.com
Safety instructions for the operator:
You have received a product designed for industrial use. Nevertheless, avoid strikes to the
housing, vibrations, damage to the operating-element panel (keypad, display), and contamination.
Make sure the product is checked for proper condition regularly (depending on the conditions of
use). Regularly check (at least every 2 years) the proper condition of the mandatory, warning,
prohibition and safety labels.
Make sure that the mains power supply has low impedance to avoid any negative effects on
instruments being operated on the same mains.
This unit is designed for operation in a controlled electromagnetic environment. This means that
transmitting devices (e.g., cellular phones) should not be used in the immediate vicinity.
Magnetic radiation may affect other devices with components sensitive to magnetic fields
(e.g., monitors). We recommend maintaining a minimum distance of 1 m.
Permissible ambient temperature: max. 40 °C, min. 5 °C.
Permissible relative humidity: 50% (40 °C).
Do not store the unit in an aggressive atmosphere.
Protect the unit from contamination.
Do not expose the unit to sunlight.
Appropriate operation
Only qualified personnel is authorized to perform configuration, installation, maintenance and repairs of
the circulator.
Routine operation can also be carried out by untrained personnel who should however be instructed by
trained personnel.
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Use:
The bath can be filled with flammable materials. Fire hazard!
There might be chemical dangers depending on the bath medium used.
Observe all warnings for the used materials (bath fluids) and the respective instructions (safety data
sheets).
Insufficient ventilation may result in the formation of explosive mixtures. Only use the unit in well
ventilated areas.
Only use recommended materials (bath fluids). Only use non-acid and non corroding materials.
When using hazardous materials or materials that could become hazardous, the operator must affix
the enclosed safety labels to the front of the unit so they are highly visible:
When using hazardous materials or materials that could become hazardous, the operator must affix
the enclosed safety labels (1 + 2) to the front of the unit so they are highly visible:
1
Warning label W00: Colors: yellow, black
Danger area. Attention! Observe instructions.
(operating manual, safety data sheet)
2
or
Mandatory label M018: Colors: blue, white
Carefully read the user information prior to beginning operation.
Scope: EU
2
Semi S1-0701 Table A1-2 #9
Carefully read the user information prior to beginning operation.
Scope: USA, NAFTA
Particular care and attention is necessary because of the wide operating range.
There are thermal dangers: Burn, scald, hot steam, hot parts and surfaces that can be touched.
Warning label W26: Colors: yellow, black
Hot surface warning.
(The label is put on by JULABO)
Observe the instructions in the manuals for instruments of a different make that you connect to the
circulator, particularly the respective safety recommendations. Also observe the pin assignment of
plugs and technical specifications of the products.
Operator responsibility – Safety recommendations
8
2.1. Disposal
The circulator contains a back-up battery that supplies voltage to memory chips when the unit is
switched off. Do not dispose of the battery with household waste!
Depending on battery regulations in your country, you might be obliged to give back used or defect
batteries to gathering places.
The product may be used with oil as bath fluid. These oils fully or partially consist of mineral oil or
synthetic oil. For disposal, observe the instructions in the safety data sheets.
This unit contains refrigerants, which at this time are not considered harmful to the ozone layer.
However, over the long operating period of the unit, disposal rules may change. Therefore, only
qualified personnel should handle the disposal.
Valid in EU countries
See the current official journal of the European Union – WEEE directive.
Directive of the European Parliament and of the Council on waste electrical and
electronic equipment (WEEE).
This directive requires electrical and electronic equipment marked with a crossed-
out trash can to be disposed of separately in an environmentally friendly manner.
Contact an authorized waste management company in your country.
Disposal with household waste (unsorted waste) or similar collections of municipal
waste is not permitted!
2.2. Warranty conditions
JULABO GmbH warrants its products against defects in material or in workmanship, when used under
appropriate conditions and in accordance with appropriate operating instructions
for a period of ONE YEAR.
Extension of the warranty period – free of charge
With the ‘1PLUS warranty’ the user receives a free of charge extension to the warranty of up to 24
months, limited to a maximum of 10 000 working hours.
To apply for this extended warranty the user must register the unit on the JULABO web site
www.julabo.com, indicating the serial no. The extended warranty will apply from the date of JULABO
GmbH’s original invoice.
JULABO GmbH reserves the right to decide the validity of any warranty claim. In case of faults arising
either due to faulty materials or workmanship, parts will be repaired or replaced free of charge, or a new
replacement unit will be supplied.
Any other compensation claims are excluded from this guarantee.
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2.3. EC Conformity
Operator responsibility – Safety recommendations
10
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Operator responsibility – Safety recommendations
12
2.4. Technical specifications
Calibration Baths
FK30-SL
FK31-SL
Working temperature range
°C
-30 ... 200
-30 ... 200
Temperature stability (1
°C
±0.005
±0.005
Temperature uniformity
°C
<±0.01
<±0.01
Cooling capacity
Medium: ethanol
°C
kW
+20 0 -20
0.46 0.34 0.15
+20 0 -20
0.46 0.34 0.15
Refrigerant
R134a
R134a
Overall dimensions (WxDxH)
cm
32x45x79
32x45x91
Bath opening (WxL)
cm
∅12
∅12
Bath depth
cm
17
31
Filling volume
Liter
14
24
Weight
kg
48
51
Mains power connection
V/ Hz
230 / 50
230 / 50
Current draw (at 230 V)
Current draw (at 230 V) <GB>
A
A
A
14
9 (Circulator)
5 (Cooling machine)
14
10 (Circulator)
4 (Cooling machine)
Mains power connection
V/ Hz
115 / 60
115 / 60
Current draw (at 100 V / 115 V) A
A
9/10 (Circulator)
7 (Cooling machine)
9/10 (Circulator)
7 (Cooling machine)
(1 ±0.02 °C@+200 °C
Circulator (SL-C)
SL
Temperature selection
digital
via keypad
indication on LCD DIALOG-DISPLAY (°C/°F)
remote control via PC
indication on monitor
Temperature indication
VFD COMFORT-DISPLAY (°C/°F)
Resolution
°C
0.01
ATC3 INT / EXT
°C
±3 / ±9
Temperature control
ICC - Intelligent Cascade Control
Heater wattage (at 230 V)
kW
2.0
Heater wattage (at 115 V)
kW
1.0
Electronically adj. pump capacity
stages
1 ... 4
Flow rate at 0 bar
l/min
22 ... 26
Max. pressure at 0 liters
bar
0.7
Max. suction at 0 liters
bar
0.4
Ambient temperature
°C
5 ... 40
Mains power connection
V/ Hz
208-230 / 50/60
Current draw (at 208 V / 230 V)
A
8 / 9
Mains power connection
V/ Hz
100-115 / 50/60
Current draw (at 100 V / 115 V)
A
9 / 10
All measurements have been carried out at: rated voltage and frequency
ambient temperature: 20 °C Technical changes without prior notification reserved.
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Electrical connections:
External alarm device 24-0 V DC / max. 25 mA
Computer interface RS232 or RS485
External Pt100 sensor
Optional for HL, SL
(Order No. 8900100 Electronic module with analog connections)
Programmer input -100 °C to 400 °C = 0 - 10 V or 0 - 20 mA or 4 - 20 mA
Input for the signal of a flow meter or external manipulated variable
Temperature recorder outputs 0 - 10 V (0 V = -100 °C, 10 V = 400 °C)
0 - 20 mA (0 mA = -100 °C, 20 mA = 400 °C)
4 - 20 mA (4 mA = -100 °C, 20 mA = 400 °C)
Standby input for external emergency switch-off
Alarm output for external alarm signal
Safety installations according to IEC 61010-2-010:
Excess temperature protection adjustable from 0 °C ... 320 °C
Low liquid level protection float switch
Classification according to DIN 12876-1 class III
Supplementary safety installations
Early warning system for low level float switch
High temperature warning function optical + audible (in intervals)
Low temperature warning function optical + audible (in intervals)
Supervision of working sensor plausibility control
Reciprocal sensor monitoring between
working and safety sensors difference >35 K
Alarm message optical + audible (permanent)
Warning message optical + audible (in intervals)
Environmental conditions according to IEC 61 010-1:
Use indoors only.
Altitude up to 2000 m - normal zero.
Ambient temperature: see Technical specifications
Humidity:
Max. relative humidity 80% for temperatures up to +31 °C,
linear decrease down to 50% relative humidity at a temperature of +40 °C
Max. mains voltage fluctuations of ±10% are permissible.
Protection class according to IEC 60 529 IP21
The unit corresponds to Class I
Overvoltage category II
Pollution degree 2
Caution:
The unit is not suitable for use in explosive environment
EMC requirements
The device is an ISM device of group 1 per CISPR 11 (uses HF for internal purposes) and is classified
in class A (industrial and commercial sector).
Notice:
•Devices of class A are intended for the use in an industrial electromagnetic
environment.
•When operating in other electromagnetic environments, their electromagnetic
compatibility may be impacted.
Operator responsibility – Safety recommendations
14
Information about the used refrigerants
The Regulation (EU) No. 517/2014 on fluorinated greenhouse gases applies to all systems which
contain fluorinated refrigerants and replaces (EC) 842/2006.
The aim of the Regulation is to protect the environment by reducing emissions of fluorinated
greenhouse gases.
Among other things it regulates the emission limits, use and recovery of these substances. It also
contains requirements for operators of systems which require / contain these substances to function.
Under Regulation 517/2014, the operator of a system of this nature has the following duties:
•The operator must ensure that the equipment is checked at regular intervals for leaks.
•These intervals depend on the CO2equivalent of the system. This is calculated from the
refrigerant fill volume and type of refrigerant. The CO2equivalent of your system is shown on
the model plate.
•The operator undertakes to have maintenance, repair, service, recovery and recycling work
carried out by certified personnel who have been authorized by JULABO.
•All such work must be documented. The operator must keep records and archive them for at
least five years. The records must be submitted to the relevant authority on request.
Refer to the text of the Regulation for further information.
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Operating instructions
3. Safety notes for the user
3.1. Explanation of safety notes
In addition to the safety warnings listed, warnings are posted throughout the operating
manual. These warnings are designated by an exclamation mark inside an equilateral
triangle. “Warning of a dangerous situation (Attention! Please follow the
documentation).”
The danger is classified using a signal word.
Read and follow these important instructions for averting dangers.
Warning:
Describes a possibly highly dangerous situation. If these instructions are not
followed, serious injury and danger to life could result.
Caution:
Describes a possibly dangerous situation. If this is not avoided, slight or minor
injuries could result. A warning of possible property damage may also be contained in
the text.
Notice:
Describes a possibly harmful situation. If this is not avoided, the product or anything
in its surroundings can be damaged.
3.2. Explanation of other notes
Note!
Draws attention to something special.
Important!
Indicates usage tips and other useful information.
This icon is used in the operating instructions to indicate flashing values or parameters
which have to be set or confirmed.
Safety notes for the user
16
3.3. Safety recommendations
Follow the safety instructions to avoid personal injury and property damage. Also, the
valid safety instructions for workplaces must be followed.
•Only connect the unit to a power socket with an earthing contact (PE – protective
earth)!
•The power supply plug serves as a safe disconnecting device from the line and
must always be easily accessible.
•Place the unit on an even surface on a base made of nonflammable material.
•Do not stay in the area below the unit.
•Make sure you read and understand all instructions and safety precautions listed in
this manual before installing or operating your unit.
•Adjust excess-temperature safety device below the flash point of the bath fluid.
•Observe the limited working temperature range when using plastic bath tanks.
•Never operate the unit without bath fluid in the bath.
•Pay attention to the thermal expansion of bath oil during heating to avoid
overflowing of the fluid.
•Prevent water from entering the hot bath oil.
•Do not drain the bath fluid while it is hot!
Check the temperature of the bath fluid prior to draining (e.g., by switching the unit
on for a short moment).
•Use suitable connecting tubing.
•Avoid sharp bends in the tubing, and maintain a sufficient distance from
surrounding walls.
•Make sure that the tubing is securely attached.
•Regularly check the tubing for material defects (e.g., for cracks).
•Never operate damaged or leaking units.
•Always turn off the unit and disconnect the mains cable from the power source
before performing any service or maintenance procedures, or before moving the
unit.
•Always turn off the unit and disconnect the mains cable from the power source
before cleaning the unit.
•Always empty the bath before moving the unit.
•Transport the unit with care.
•Sudden jolts or drops may cause damage in the interior of the unit.
•Observe all warning labels.
•Never remove warning labels.
•Never operate units with damaged mains power cables.
•Repairs are to be carried out only by qualified service personnel.
Some parts of the bath tank and the pump connections may become extremely hot
during continuous operation. Therefore, exercise particular caution when touching
these parts.
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Caution:
The temperature controlling i.e. of fluids in a reactor constitutes normal circulator
practice.
We do not know which substances are contained within these vessels.
Many substances are:
•inflammable, easily ignited or explosive
•hazardous to health
•environmentally unsafe
i.e.: dangerous
The user alone is responsible for the handling of these substances!
The following questions shall help to recognize possible dangers and to reduce the
risks to a minimum.
•Are all tubes and electrical cables connected and installed?
Note:
sharp edges, hot surfaces in operation, moving machine parts, etc.
•Do dangerous steams or gases arise when heating?
Is an exhaust needed when working?
•What to do when a dangerous substance was spilled on or in the unit?
Before starting to work, obtain information concerning the substance and
determine the method of decontamination.
Notice: Check the safety installations at least twice a year!
•Excess temperature protection according to IEC 61010-2-010.
With a screwdriver turn back the adjustable excess temperature protection until the
shut-down point (actual temperature).
•Low level protection according to IEC 61010-2-010.
To check the function of the float, it can be manually lowered with a screwdriver for
example.
Operating controls and functional elements
18
4. Operating controls and functional elements
Front view Rear view
1a
1b
Mains power switch, illuminated for circulator
Mains power switch, illuminated for cooling machine
2
VFD COMFORT-DISPLAY
Header: Control indicators
Line 1: Actual value internal or external
The display is depending on the selected control mode in the
menu > Control < (internal or external).
or
Actual value of the precision reference sensor „C“ xxx.xx
Line 2: Working temp. setpoint, constantly S xxx.xx
Line 3: Actual value (E = external or I = internal or C= reference sensor)
Alternating with the display in line 1
Use the keys to indicate further values in line 3
PI Capacity in % - with manipulated variable set to >control<*
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PS Capacity in % - with manipulated variable set to >serial<* or
>eprog<*
H Heater capacity in Watts
U Mains voltage Volts
F Flow rate in liters/minute
(providing EPROG input set to >Flow rate<)
*refer to >MENU / CONFIGIGURATIO> page 34
2.1
Control indicators in the header:
Heating / Cooling / Alarm /
R
emote control
2.2
Control indicators in the header:
Temperature indication Internal or External actual value
Temperature indication in °C or °F
2.3
Display for the adjusted pump pressure stage in the -OFF- mode.
Display for the effective pump pressure stage (rotation speed) after start.
Four stages, adjustable via the button, in the menu >PUMP<.
3
LCD DIALOG-DISPLAY
Line 1: Setpoint and origin of setpoint programming
(Key / RS232 or RS485 / ext. Pt100 / EProg)
Line 2: Actual value - internal or external,
identical to line 1 of the VFD-COMFORT-DISPLAY
Line 3: Heating capacity in %.
Line 4: Control type: internal / external
Navigation aid in MENU - Window
Keys / :
Selection of menu items / parameters
- Setting in line 3:
Actual value / parameter
Orientation aid in MENU - Window
Line 1 - name with allocation to key
Safety values
T – Setpoint
1 Main menu Level 1
2 Submenu Level 2
Example: CONFIGURATION
3 Submenu Level 3
Operating controls and functional elements
20
4 Keypad 1 Navigation keys
4.1
1. Key: >OK< Start / Stop (pump / heater )
2. >OK< in the menu Menu item / select submenu for setting
Save set value
Save selected parameter
A beep signals the end of setting
After the actions Start, Stop and change from VFD Display to standard
display the key is locked for a short time.
The above graph “front side” shows an example for standard display.
4.2
1. Key: >Return< Stop (pump / heater)
Special display on VFD Display leave line 3.
2. >Return< in the menu one menu level down
Correction function for parameters or values (prior to OK)
immediately back to standard display
- icon for „keep key pressed down“.
4.3
1. Key: >Up / Down <temperature – increase/decrease setpoint
Push key quickly for single steps,
Keep key pressed for fast change.
2. >Up/Down< in the menu selection of menu items / parameters
Menu keys
4.4 Key: start the menu > warning and safety values<
4.5 Key: start the menu >temperature setpoints<
4.6 Key: display of MENU structure
5
Keypad 2
..
Numeric keypad: numerals 0 to 9
minus / decimal point
Backspace key
on LCD DIALOG-DISPLAY.
6
Adjustable excess temperature protection according to IEC 61010-2-010
This manual suits for next models
1
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